Contents

This document describes the impact matrix when you insert the Timing,
Communications, and Control Card Version Two (TCC2) into the locked or unlocked
shelf, versus the Timing, Communications, and Control Card Version Two Plus
(TCC2P). TCC2P is a next-generation system processor for the Cisco ONS 15454
Multiservice Provisioning Platform (MSPP).

The information in this document is based on these software and
hardware versions:

Cisco ONS 15454

The information in this document was created from the devices in a
specific lab environment. All of the devices used in this document started with
a cleared (default) configuration. If your network is live, make sure that you
understand the potential impact of any command.

When you install TCC2P, you can provision front access and backplane
Ethernet ports in Repeater mode or in Secure mode.

The Secure mode isolates packets from the two interfaces from each
other, in order to provide a higher level of security. In the Secure mode,
craft technicians who work through the front Ethernet ports cannot access the
Central Office LAN that is connected through the backplane Ethernet
port.

If you require different levels of security in your network, you can
associate user security levels with the ability to execute different commands.
In addition, you can use the Secure Mode Lock to restrict changes to the
network element (NE) settings even by users with the SuperUser attribute. The
Secure Mode Lock enables you to ensure that users do not change the NE settings
after you turn up and add the NE to the network. Activation of the Secure Mode
Lock deactivates all the configuration options that the Lock protects. Items
that the Secure Mode Lock protects are termed "Lockable" items.